Marconi Freitas-da-Costa and  Watsan C. Silva and  Thaís S. Paula and  Débora O. Silva and  Maria G. Vieira,  Social Marketing and Nonprofit Organizations.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2011, vol. 53(5). 462 - 467
    [viewed 16 October 2021]. Available from: https://publications.waset.org/pdf/6105.